Friction-drum



(No Model.)

H. J. MGKEOWN.

FRIOTION DRUM.

Patented June 26,1888.

N. PETERS. Photu-Umagnpher,'washnglom D, c.

HUGH JAMES MOKEOVVN, OF NEWPORT, KENTUCKY.

FRCTION-DRUIVL SPECIFICATION forming part of Letters Patent No, 385,191, dated Jfune 26, 1888.

Application filed February '7, 1888. Serial No. 263,210. (No model.)

To aZZ whom it may concern.-

Beitknown that I, HUGH JAMES McKEowN, a citizen of the United States, residing at Newport, in the county of Campbell, State of Kentucky, have invented certain new and useful Improvements in Friction-Drums, of which the following is a specification.

My invention relates to improvements iu friction-drums for use with pile driving and hoisting machines; and it consists in features of novelty, to be hereinafter fully described, and then pointed out in the claims.

In order that myinvcntion may be fully understood, I will proceed to describe the same with reference to the accompanying drawings, in which- Figure I is alongitudinal section of my friction-drum, and Fig. II is a View of thehandle.

Referring to the drawings, 1 isa shaft, to which is keyed by the keys 2 and 3 the drum 4. Said drum 4 has friction-surfaces 5 5 fastened to it at one end bythe bolts G 6. The i gear-wheel 7, having the flange 8 and driven by and intermeshing with the gear 9, isjour` naled loosely on said shaft 1. To the hub 1 0 of said gear-wheel 7 is keyed the winch ll, usual in such machines, by the key l2. The shaft 1 is hollow and adapted to receive the rod 13. Said rod 13 passes through the entire length of shaft l and has affixed to its end, inside ofthe winch 11, a head or ange,14. The said shaft 1 is liveld by the frames l5 and 16.

17 17 are studswhich are attached to the face of the frame 15. Onto these studs is fitted the nut 18, having perforations to receive them. Into the central screw-threaded perforation, 19, of this nut 18 the screw-threaded tubular piece 20 is screwed. rIhrough the tubular piece 20 the rod 13 passes loosely, and it extends beyond the same, the extension being screw threaded to receive nuts 2l and 22.

`The inner end of the piece 20 bears against a "operative or original position.

brought into working frictional contact with the friction-surfaces 5 of the drum, and the machine becomes operative for hoisting purposes. When it is desired to release the frietional contact, the reverse turn of the handle' 24 will allow the wheel 7 to go back to its in- Dn'ring this operation the wheel 7 is continuouslyin mesh with the drivinggear 9, along whose cogs it slides backward and forward.

The movements just described are caused by the longitudinal movement of the rod 13, with the nuts on which the screw-threaded tubular piece 2() engages.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. In combination with the engaging gearwheel and the friction-drum mounted on a. hollow shaft supported in suitable frames, a tubular screw-threaded piece, a nut fixed to one of the supporting-frames and screw-threaded to receive the said piece, and a rod passing loosely through the tubular piece and the hollow shaft and provided with an engaging device, substantially as shown and described.

2. In combination with the gear-wheel 7 drum 4, provided with friction-surfaces, hollow shaft 1, which receives the Wheel and drum, and frames 15 and 16,in which shaft lis mounted, studs 17 on frame 15, nut 18, tted on said studs, tubular piece 20,screwed into said nut, handle 24,fitted on the forn1er,and rod 13,hav ing nuts 21 and 23, wherewith piece 2O is adapted to engage and move rod 13 longitudinally, said rod being provided with an enlargement, 14, adapted to engage'the hub of wheel 7 and bring the wheel 7 and frictionsurfaces of the drum into contact,substantially as set forth.

H U GH JAMES MOKEOWN.

Witnesses:

JEPTHA GARRARD, I?. J. GADWALLaDER. 

